tsurucapital/euphoria — pull request #4 by maoe (2012-07-04 06:02:44+00:00)
Title: Relax the type of updateUseAllIO and mappendUpdateIO to use Monoid a instead of ()

`updateUseAllIO` and `mappendUpdateIO` don't need to be specialized to IO ().

I've also added specialized version of `mappendUpdateIO`, named `mappendUpdateIOUnit`. It's not exposed but used via a rewrite rule.